(A) MULTIPLE CHOICE Q.

UESTIONS
1/ ......... pollutants are ~mitted directly from identifiable sources.
(a) Obs erya ble . . · · (b) Tert iary
(c) Prh nary (d) Seco ndar y
::::==-- 4.4'1

2. Whi~ one of ~e follo_w ing is NOT a primary pollutant?

(a) nitrogen o,ades . · (b) sulfuric acid
(c) sulfur dioxide ··. · (d) particulate matter
(e) carbon monoxide
3. The source of nearly half our pollution (by w~ight) is from the ......... c~tegory.
(a) transportation (b) agricultural
(c) stationary source fuel combustion (d) industrial processes
(e) none of the above
4. A pH of 4 is ......... times more acidic than a pH of s.
(a) 5 (b) 10
(c) ·SO
(d) 75
(e) 100
5. .The vertical dist~pce between Earth's surf~ce and the height'to which convectional movements
extend is called the ......... · ·
(a) vertical ratio (b) stability laY,er
(c) convectional limit . (d) mixing depth •. 1
(e) turbulence factor
6. Tlle major component of photochemical smog is .........
. (a) sulfuric acid (b) ozone
(c) particulate matter · (d) nitr':)geri dioxide .-· · · ·
(e) carbon monoxide ·· ·· · · -
7. Two of the most important atmospheric conditions affecting the dispersion of pollutants are the
. strength of the wind and the ......... of the air.·.
(a) stability . . . . (b) pressure
(c) visibility (d). ciepth
(e) temperature
a. Which one of the following pollutants' has· shown the ·greatest percerif decrease in concentration
·dutjng the past years?
.• (a) ozone (b) s~fu~ dioxide
(c) ·nitrogen dioxide (d) lead
(e) particulate matter
9. This colorless, odorless, poisonous gas is the most-abundant primary pollutant. ·
(a) carbon d~oxide (b) nitrogen ·o xide
(c) sulfur dioxide (d) methane
(e) none of the above
10. Noise pollution is best described as ...
(a) Barking dogs (b) Any ~welcome sound
(c) sing~ng group (d) · Rock music ' .
11, Decibel (dB) is.the mea~ure of...
<a) sound inte~ity (b) decorated bells

(c) sound language (d) sound Frequency

12. Sound intensity is the air pressure caused by ...
(a) light waves (b) sound waves
(c) space waves (d) transvers e waves
13. Sound.intensity measure d by decibels is not done by addition but rather through ...
(a) . Division (b) Subtraction
(c) Multiplication (d) addition
~ai~f ul sensation in the ear is usually at the level of ...
(a) 1000 to 1200 dBA (b) 0 to 20 dBA
(c) 120 to 130 dBA (d) SO to 70 dBA
15. The dangerous decibels of noise ...
(a) can be altered by distan~e
(b) are not altered by how close you are standing to speakers
(c) cannot be alte~ed by _dist~n~e _ . . , .
(d) can be stopped _a ltogether by trees
16. it is importan t to distingui sh between point source and nonpoin t source pollution because point.
source pollution is much easier to control. Which of the following is an exampl~ of nonpoint source
pollution? ·
(a) domestic sewage from a town.
(b) storm-w ater runoff from a storm drainpipe
(c) discharg e pipe from a·meatpacking plant_
(d) agricult ural fertilize rs from cr.opland · ·
17. In which of the following locations is thermal pollution the biggest problem? . . . ;
(a) surface water (b) air ·
(c) soil · , (d) groundwater
18. Primary sewage treatmen t removes what percentage of the biochemical oxygen demand (BOD) from
domestic sewage?
(a) 3 (b) 60
(c) 90 (d) 33
19. Some of the oil pollution of our oceans has always occun:ed naturally through natural leaks in the
ocean floor. However, this source accounts for only about 9% of the oil that reaches our oceans.
Which of the 'rollowing is the·primary source of oil pollution in the oceans?
(a) harbor pollution ·
(b) inland sources,·such as motor vehicle crankcases
(c) oil tanker accidents
20. Which of the following pathogenic microorganisms is unlikely to be contract ed through water?
(a) amoebic dysentery (b) _
typhoid fever
.- (c) hepatitis (d) cholera
(e) West Nile virus fever
21. At what stage in the wastewate:r treatmen t procedure would nutrient s such as nitrogen and
phospho rus be removed in a secondar y treatmen t facility? ·
• a) on the trickling filter (b) at the bar screen
(d) in settling tank
 4.43 Environmental POIIUllOn

22. What pollutant has only r

developed nations? ecently (in the past 10 years) been discovered in many inland waters of the
(a) artificial pesticides ''
(b) kerosene derivatives
(c) hormone disruptors -'
ich of th ~ ll . (d) nitrates . _ . .
23. Wh e i.o owmg is di . . .
problem~? rectly or md1rectly related t_
o _essentially all of our environmental

(a) depletion of resources

(b) popula~ion growth
(c) technology I •,
(d) pollution
(e) destruction of rainforests . .
~
~K1he environmental c·a use 0 f • · . skin
. cancer cataract and
increase m mutation is
(a) acid rain (b) ' global warming : -' •· •·:- · ·· ·· ·· · · ' · · I .•

(c) nuclear winter (d) ozone depletion ..

25. Greenhouse effect leading to the warming up of the atmosphere is due·i:o ·
(a) infra-red rays reaching.to the earth .. • ·
(b) UV rays reaching the earth .
. .. ,
(c) increase_in temperature duet~ increase i~ CO 2 level
.

(d) depletion of ozone layer

26. Acid rain
(a) increases the pH of soil (b) _decr~ases 1:)l_e _P.H;.of ~oµ_. •.-
. -
(c) does not change the pH of soil (d) Increases the fertilizy of soil
27. Which one is not greenhouse gas?
(a) CO2 (b) Ozone • ,,. • • ._ I

(c) CH4 · · .. (d) CFC

28. Our environment is presently not degrading due to ·
(a) deforestation . (b) overgrazing
(c) rapid industrialization . · · (d) urbanization
(e) none of the above
29. Which one of the following is NOT.included in Earth's climate system?
(a) atmosphere (b) solid Earth ·
(c) biosphere (d) hydrosphere
{e) solar sphere ·· ··
1

30. Which one of the following is NOT a signifi~ant natural cause of climate cha~~e?
(a) solar variability (b) variations in Earth's orbit ·
(c) volcanic activity (d) plate tectonics
{e) erosion of the land
31. The combustion of coal and oil is a major source _o f which greenhouse gas?
. (b) nitrous oxide
(a) ozone
(c) _methane (d) CFCs
(e) none of the above
 32. Which of the following is associated with the astron omic al
th~or y of clima te c~ang e?_
(a) eccentricity of Ea~h 's orbit . ·(b) obliquity of Earth 's axis
(c) . precession ~fEar th's axis ' (d) ~ .o f.t he above
. (e) both precession and obliquity of Earth 's axis
.
33. Which one of the following is a signif icant contr ibuto r to
incre ased levels of atmo spher ic carbon
dioxide? ·
(a) deforestation (b) aerosol spray can gases
(c) refrig erant leakage • (d} large rice paddief?
(e} none of the above
34. The slow wobbling of Earth as lt spins on its axis is called
.........
(a) eccen tricity (b} obliquity
(c) aphel ion (d) precession
(e) exten sion ..... . ' . .. ' ,, , • . ..
'

35. Whic h of the following is a possible consequence of a

greenhouse warm ing?
(a} a chang e in agric ultura l productivity •· · (b} a ~ise in sea level
(c) new weath er patte rns · · (d) al~eration of the world's wate r resou rces
(e) all of the above· .
. 36. Oxygen isotope analy sis meas ures the .........
(a) amou nt of radioactive oxygen in the .a ir .
(b) oxygen conten:t ~f ocean' wa~er _. .. .' . . . . .
(c) ratio of two differ ent types of oxygen atoms
(d) oxygen conte nt of organic sedim ent
(e) rate of oxygen deple tion ·
37. Whic h one of the following is NOT~ green house gas?
. . . ' -
·(a) _nitrou s oxide (b) meth ane ·
(c) carbo n dioxide (d) oxygen
(e) all are green house gases
38. When deter minin g clima te chang e, oxygen isotope meas . .
urem ents are made from an analy sis of

(a) ocean water (b) lava

(c} cores from old trees (d) glacial ice
(e) none of the above
39_. Along with carbo n dioxide, ........._is largely responsible for
the green house effec t of the atmo spher e.
(a) nitrog en . (b)' _hydro gen
(c) sulfu r dioxide : (d) oxygen
(e) wate rvap our .
40. Whic h of the. following help scien tists discover how clima
te has chang ed over broad expan ses of
time? ·
(a) sea-fl oor sedim ents · (b) oxygen isotope analy sis
■• • ■ (c) paleo sols (buried soils) (d) all of the aJ>ove
(e) only sea-floor sediments and oxygen isotope an~ysis
- - -- 4.45 . Environmental Pollution
J
41. The greenhouse effect is caused by... ,.
(a) Greenhouse gases in th · 1 · · · ·
. , 1. e ower atrnosphere absorbing solar radiation •
(b) Greenhouse gases in th. 1 · . ·
· . e ower atmosphere absorbing radiation from th_e Earth's surface, and
preventing much of it escap' · .
· . 1ng into space
(c) Too much heat in the atmosphere
(d) Too much sunshine reaching Earth
42. Which of these natural events affectthe climate? ' '. 1

(a) Thawing permafrost (b) The path of the Earth around th~ ~un
(c) Volcanic eruptions '' · (d) All of the above ·
43. _Which of these greenhouse g~ses is most abundant in the atmosphere? r ,
(a) Carbon dioxide (b) Methane . ~ •
(c) Nitrous oxide
~ (d) Water vapour ··
44. What greenhouse gas was not present in the ·atmosphere in pre-ii)dustri~l times (before 1750)? ·:
. (a) Trichlorofluoromethane . : . (b) Carbon dioxide .. · , ·.. · · . · . ..
. . . -~
(c) Nitrous oxide . : (d) Methane
' . . . ' . ., . ~ . \ , .
45. Which of these countries has the highest per capita _carbqn dioxide emissions? -··.· · · . ·
(a) United States (b) Australia ... . ..
. ..
(c) Saudi Arabia (d) China
46. Which of the following acti0,ties contributes the most to carbon emissions globally?
{a) .Agriculture. (b) .Transport···' .- . .
(c) Forestry • (d) Energy supply
·- .
47. The1987Montrea1Protoc olwassignedforwhichoft hefollowingreasons? ' ·. . .- . •. ' . ' ··
(a) To phase out the use of CFC's, found to b·e -c~u~ing depletion of th~ ozon~ layer -
(b) ·To begin converting from fossil . fu~i use to more renewable e~ergy sour"ce~ to reduce ~~
anthropogenic greenhouse effect · · · · · · '- , · ·
(c) To stop the global tra~e in pro~ucts ma~e ~rom_endangered tigers . , _,
{d) To ban nuclea~ testing in tropical oceans
48. One eff~ct of global warming is a ~se in sea levels, which certainly could affect coast~l citie.s that are
little above current sea level. How ~uch ha.s ~e sea ,level risen _in the J?ast 100 years? ·
(a) 1-2 inches (b) 6-8 feet
(c) 6-8 inches , · (d) 1-2 feet
49, What would the ·Kyoto Protocol do? • '
(a) It would not allow developing countries like China to m~dify· their coal-burning equipment to
. ·reases in carbon dioxide levels.
prevent f u rther me . . .
(b) It would curb all Co2 emissions from all countries to bring them about 15 to 20% down, from
. · •
the
1
levels reached in 1990.
· ban production of CFCs:
olJld comp1ete1Y · . . · '
uld curb co2 emissions from all developed countries to bring th~,
OU it WO reached in 1990, . . .
SO. Whic h state ment below is correct?
(a) Normal rain' s pH varies by more than 3 pH units.
(b) Normal rain has perfectly neut ral reaction (pH= 7) ·
(c) Normal rain is mildly acidic because of the carbonic acid
(pH< 7).
(d) It is impossible to tell.
(e) Normal rain is mildly alkaline (pH> 7).
·
51. Which state ment best describes.t he curre nt situation with
the ozone hole?
(a) The ozo~e hole has grown about 50%.larger. · · -
· . b
(b) The ozone hole has shown a major decline after the
ozone-depleting chem ica1s were a_nned
unde r the Montreal Protocol. · · ·· .
(c) The ozone hole remained. . . . . .
more or less constant 2000 despite a slight reduction
m size smce ,
.... ... in the airio ~t of.CFCs .in'the stratosphere. 1
(d) Ozone holes of about equal size ~re_~ow developing in
both the Arctic and Anta rctic a.
52. Which strat~gy belo,.;; ~rt not
'
~ssi~t ·u~ .i n °j>r~vertti~g acid rain?
l ~ • • • • • , -
. , •

.. (a) _inst~ ng sc~b bers at_po~e rplan ts _ ·- _

·...(b)° switching.to ~~d p~wer as a·so~r~e of ~l~ctri~ity
(c) using used rubber.tires on children's playgrounds
..
• ., .. . : ... . • ~ • r.
(d) switching to low-sulfur coal . . _ ·__ : <. _
53. The pH scale is logarithmic; that is, each unit on it is 10
times great er than the prev ious one.
(a) True . . . .. · ... . · . . ·. : ··
._-. (b) False
. .
54. ~ven with a complete CFC ban worldw:i4~r ~t ~ill ~ake the
ozone layer SO to 100 year s to recover.
(a) True · (b) False ·
55. Ozone is a pollu tant at grou nd level, l;>ut it i~ a desir
abl~ chemical in the strat osph ere beca use it
blocks dangerous ultraviolet radi~ti~n. . _ _. . ,_
, .. (a) '.frue. .. , . .. ,.. . (b) False
56. An ozone hole can occur only over Antarctica.
(a) True . .·. . · . . . (b) False
57. The projected effects of global warm ing are all negative.
(a) True · (b) False
58. Glob~ warm ing over the 21st centu ry wi~ likely result
in a 10 mete r rise in ocea n levels.
(a) True - ·· (b) ~alse
59. Because Warming is global, Earth is wam iing up uriifo ,.
rinly everywhere.
·(a) True _(b) False
60. Reductions in meth ane emissions could help mi~igate global warm
ing.
{a) True (b) Faise
61. All global circulation models pred ict a futur e that is
w~rm~r than today for the next _1 years.
{a) True 50 00
. · (b)_False . .. - . ..
62. In the past cen~ ry, the amou nt of precipi!atio:p world
wide·has ~ecreased.
(a) True . · (b) False
3
6 • To stop globa l warm ing by the end of the 21st century, we would need to r d
emissions muc h more than wha ts , . ,
reqw red unde r Kyoto Protocol (6 to S%) e uce h
green hous e gas
. then ext2 0-50 year s·. ·.. . .. 'per aps by as much as
(b) False
 (S) .ADDmoNAL ~BJECTIVE Q.UEsnoNs
1, Natural pollution is caused by
(a) volcanic eruptions .
J2: cutting of woods
(b) vehicle emissions
(d) smoke from industry
r:Tisthe .
(a) Natural pollutants (b) Primary pollutants . .
(c) ·secondaryp~ llutants . (d) Noneofthe~e ·. ·. _.. .
3, Pe~oxy-acetyl n~trate (PAN) is formed by the reaction of two primary· polluta~t, Il;amelr nitrogen
· . o,ade and ......... released from motor veh'1c1e m · presence of sunligh. t .
(a) hydro-neutrons (b) ·hydro-carbons
(c) water-carbons . (d) so2 _. _ _ _.. : • _ . • • · •. • ·.•.• ,-. _ •
4. The pollutants which are occur in nature but beco~es.pollutant.when_tlieir.cppc~~~ra~i~n reaches
beyond a threshold value_in the environment are called as ..: · · · , · · · · · ·
(a) Primary pollutants ..- . · ·(b{ Q.~antit~tive poUU:t~ts . .· .· _: ·. ·. : . . ·.. .
(c) Secondary pollutants . . (d) Qu~litativ~-p~llut~n!s. _· · .· . .. .: . ..
5. The pollutants which dp not occur in the environment but are passed frito it through h~~ui ·a ~vity
are called as ... . ..·, .·. · •· · · · · ·· · ·· · -
(a) Q.ualitative pollutants .. (b) Qua~tftative pollutants·.·· · :-_. . -. . . .-_. .. ..- :
(c) Natural pollutants (d) Noneofthese · · · · ·: · · · · · · · · ; .• ,··.· ·-.'..•' .
6. DDT is an example of -~ '
(a) Q.ualitative pollutant · (b) Quantitative pollutant ·
fr Natural p~llutant · . (dJ · No~e of-these·' · :· · · · ··
/ ' CO2 is an example of · · -· · •· ·, · -:
(a) Artificial pollutant · ·· ·· ·· (b) Quantitative pollutant · ·· · . ·. · •.· · · . ~: ·_. ·
(c) .Qualitative pollutant . . (d) Noneofthese . _. .. ·' ~ · · -, -< ·. ', ·.-··
8. The pollutants which are waste products an~ they are slowly degraded by microbial action are called
as ...
(a) Biodegradable pollutants · · ··._ : '(b) Non-biodegradable pollutants
(c) Artificial pollutants .·, (d) None of these
9. ·I~ terms of origin, pollution may be nat~ral. and.......... .
(a) super natural . __, .... . . · ·. ·. · . · · . · ·. ._(b)·.sub~natural ..... ~ . .
(~) anthr~pogenic . . . . -(d) anti~anthropogenic .
10. The man made pollution, such_as in~u_s~I?-~_P?ll~tion,.~g!i c~tural pollution ~tc. are called as ...
· (a) Anth~opogenic · ... (b) Anti-anthropogenic .· · · · ·.·
~
(c) Semi-anthropogenic . · (d) Natural ~
11. On the basis of physical.stat e, air pollutant~ are of two types, one is gaseous.aJ?,d other is ......... .
(a) particulate . (b) semi-particulate · _
(c) tri particulate ... . ~d) fog
12. The pollutants occur as solid and liqui~ state are ~efe! red as ......... .
. (a) Foam · · · (b) Fog · ·
(c) Particulate pollutant (d) Gaseo~s pollutant _ __
. The vapour of compounds whose boiling point is below 200°c are in~luded in ......... .
particulate pollutant (b} gaseous pollutant
.. (d) mist
og .
 ' I
(B) ADDfflONAL OBJECTIVE QUESTIONS
1. Natural pollution is caused by
(a) volcanic eruptions .
(b) vehicle emissions
J2: cutting of woods . (d) smoke from industry
r~~Tisthe
(a) Natural pollutants (b) Primary poµutants
(c) Secondary p~llutants . (d) None of the~e , . . .. ·.. · .. .
3. Pe:oxy-acetyl n~trate (PAN) is formed by the reaction of two primary. polluta~t, ~ameir nitrogen
o:,ade a nd ......... released from motor vehicle in presence of sunlight. .
(a) hydro-neutrons (b) ·hydro-carbons
(c) water-carbons . (d) so2 _ , . . .·• . •• . • •· .. • ·.• . • • . . ,

4. The pollutants which are occur in nature but beco~es·pollutan<when tlleir.cppc~~~ra~i~n reaches
beyond a th~eshold value_in the environment are called a~ ..: · · · · · · · · · · · - · . . . . -
(a) Primary pollutants ... . '{b).Q~a~iit~tive p~ll~t~ts . .. · .; ~ ' ~ . ·. ~
(c) Secondary pollutants ·. · · · ' · (d) Qu~hitbi~-p~iiui~nts · .· · · .·. · · ·. . ·
5. The pollutants which do not occur in the environment but are p~~sed into it through 'liu~~ri ac~ivity
are called as ... · .~ ·t · · · · · · · · · · · - ~ ·

(a) Qualitative pollutants .. (b) Qu~titative pollutan{s· _.. ·.:, . .... ·•. . ·. . . .
(c) Natural pollutants (d) None of these · ·· ·· ·>.: ·. : · ·······• · \~··
• 4 • , •

6. DDT is an example of ·· ·- ·· ··
(a) Qualitative pollutant · · · (b) Quantitative pollutant · · .';_._-: : ··1
j9--Natural p~llutant . : : (d) : None of-these· . . .. . -. . .. .
/ ' CO2 is an example of · · · •· : · :
(a) Artificial pollutant · ·· ·· (b) Quantitative pollutant •·· · ·· · · ···· ·
(c) Qualitative pollutant . · ., _(d) Noneofthese · , .. > ~ · · • ... • · • • ·••

8. The pollutants which are waste products and they are slowly degraded by microbial action are called
as ...
(a) Biodegradable pollutants · · ··. . (b) Non-biodegradable pollutants
(c) Artificial pollutants . . ·, (d) None of these
9, · I~ terms of origin, pollution may be natural a.nd ;........ .
l •
(a) super natural . . . , , . ., . ', ·. (b)·.SU~7natural
(~) anthr~pogenic . . . . (d) antFanthropogenic .
10. The man made pollution, such; as in<;lu_s~~~l_p o~ution,.~g!,ic~~tural pollution ~tc. a~e called as ...
· (a) Anthropogenic (b) Anti-anthropogenic · ·
(c) Semi-anthropogenic . _ ·. (d) Natural
11. On the basis of physical.state, air pollutants are of two types, one is gaseous and other is ......... .
(a) particulate · · (b) semi-particulate
(c} tri particulate , . ~d) fog
ti. The pollutants occur as solid and liqui~ state a~e _refe~ ed as ......... .
. (a) Foam · · (b) Fog · ·
(c) Particulate pollutant (d) Gaseous pollutant
e ,rvapourof co mpounds whose boiling point is below 200°c
. are included 1·n ..........
articulate pollutant (b) gaseous pollutant
. (d) mist
 r: 1 ••~-:··===~==-----~----~~--==========-~~~~~~~
;;...---

(S) AJ)DmONAL OBJECTIVE QUESTI

.
1. Natural po.11ut1on is caused by
ONS
4.47 Environmental Pollution

(a) volcanic eruptions .

(b) vehicle emissions
cutting of woods
DTisthe · (d) smoke from industry
(a) Natural pollutants
(C) Secondary pollu t ants (b) Primary pollutants
· . . •.
3, Peroxy-acetyl nitrate (PAN) is ~ d. (d) None ofth~~e . ·. · .
10 by the reaction of two primary pollutant, namely nitrogen
'de and re' d rme
OXl ......... 1ease from .
motor vehicle in presence of sunlight. ·
(a) h yd re-neutrons ·
(c) water-carbons (b) hydro-carbons
(d) S02 • .
4. Th e po11utants which are · ·· ·· · · · ·· · · · · ·· · · · · ·· · ·
beyond a threshold _occur m ~ature but becomes po~uta_n~ when ~~i~.~p:pc~~~ra~on reaches
. • value m th e environment are called as ...
(a) Primary pollutants · ·. · · . . . •· · . .. . · ·
(b) ~u~ntita~v~_poll:utants · ·
(c) Secondary pollutants . .. . . ..
. . (d) Qualihitive·?~ilutan!S .
5. The po11utants which do not occur in the environment • • 1t
but are passed mto · throug · li h urnan ·· · ·
· - · ·activity
are called as ... . ·. .·. . · ··
. . (b) Quantitative pollutants ·-· ·. . . -. . .·. . . . . · .
(a) Qualitative pollutants
(c) Natural pollutants (d) None of these
. .
· . · · · · .-·· ···. · . : ,.
..
6. DDT is an example of
(a) Qualitative pollutant (b) Quantitative pollutant
~Natural pollutant ·_ : .. (d}: None of·these·
/ ' CO2 is an example of -
· ·- (b) Quantitative pollutant •·· ·- . . ... .
(a) Artificial pollutant
1
(c) Qualitative pollutant (d) None of these · ·- •
8. The pollutants which are waste products an~ they are slowly degraded by microbial action are
called
as ...
(a) Biodegradable pollutants · ··. . (b) Non-biodegradable pollutants
(c) Artificial pollutants . ·.(d) None of these
9. I~ terms of origin, pollution may be natural.c;\nd.;........ .
(a) super natural _: _.. . . ·. ·. - · . · . . (b) .sub~natural
(c) anthropogenic (d) anti-anthropogenic
10. The man made pollution, such. as in~u_s~r~~l_p_ollution,.~~icu~tural pollution etc. are called as ...
(a) Anthropogenic . . . . (b) Anti-anthropogenic
(c) Semi-anthropogenic . · (d) Natural.
11. on the basis of physical,state, air pollutants are of two types, one is gaseous and other is ......... .
{a) particulate (b) semi-particulate
(c) tri particulate . ~d) fog
12. The pollutants occur as solid and liquid state are ~eferred as .,....... .
(a) Foam · (b) Fog ·
(d) Gaseous pollutant
(c) Particulate pollutant
13. The vapour of compounds whose boiling point is below 200°C are included i~ ......... .
(a) particulate pollutant (b) gaseous pollutant ·
. (d) mist
()
C ~~ .
~ 4.46
I

14· The smaller particles such as dust, smoke etc. which remain
suspended for long period in air are
called... ·
(a) Setteable particles (b) suspended particles,
(c) Gaseous polluta nts (d) Micro pollutants
15. The particles larger than 10 µm in diamete r such as water drop are called as ...
(a) .Gaseous polluta nts (b) Setteable particles
(c) Non-setteable particles , (d) Suspended particles
16. The larger suspend ed partitje s which more than 1 µmin .diameter are called .......
..
(a) Dust and Mist (b) Gaseous and semi-gaseous pollutan ts
(c) Fog and Frost . (d) Aqua and Rox-mixed
17. Cotton dust produce lung fibrosis, also called as ... .
. (a) ~yssino sis (b) silicosis
(c) : siderosis (d) none of these . .
18. Air bonne organic m~terials such as spoi:es,·pollen, bacteria, fungi cause several diseases
and allergic
. reactions-called as ...
• ._ r (al.hay fever
(b) T.B.
(c) .Ronbix (d) Altra-Rix
19. BOD stands for
(a): -l3i.ological Oxygen Demand (b) Bio-..Chemical Oxygen Demand
(c). Bio-Chemical Ozone Demand (d) Biological Oxygen Difficiency
L
20. BOD express ed in
(a). ·milligr ams of car~on per litre of water (b) ~iUigrams of sulphur per litre of water
{c;). -~ gram s.of oxygen per litre of water (d) micrograms of oxygen per litre of water
21.· C0D.sta nd.s for
(a) _Carbon Oxygen Demand · (b). Carbon Obtained Demand
(c) Chemical Carbon Demand (d) Chemic ~.Oxygen Demand
22. An acciden tial discharge of petrole um in oceans is called ...
(a). oil leak · · (b) oil milk
(c) . oil spills (d.) oil waste
23. Water having DO content below ......... is considered to be highly polluted.
(a) 4.0 mg/L . (b) · 8.~ mg/L
(c) 11.2 mg/L (d) o.q1 mg/L
24. T.Qe species survive in highly pollut~d water with low DO content are recognized as ........
for polluted
water. ·
(a) Re-survive species (b) Top species
(c) Indicator species (d) Gama species
25. Water contam inated with cadmiu m can cause ......... disease. .
(a) Itaiitai disease (b) La la disease
(c) Minam ata disease (d) Sasu.disease
26. Pesticides are also called as ......... .
(a) superci des (b) biocides
(c) nano-ci des (d). catcides
27. Increas e in the concen tration of soluble salts in the soil is called as ......... .
(a) soilific ation (b) soluble-soil
(c) salination (d) desalination
 4.49 Environmental Pollution

28 Radioactivity is a property
. .
· enuss1ono f ......... . of certain elements to spontaneously emit protons. Protons means
(a) alpha particles
(b) beta particles
(c) gamnia particles
(d) none of these
29. The unit of sound level is ·
(a) decibel
·········.
(b) noise-meter
(c) dolphan
. · (d) dub
30· Noise level beyond ......... db cause physical discomfort.
(a) 1120 · (b)
10
(c) ~20 , (d) 0
·
31. Environmental pollution means addi·ng ......... t o environment.
(a) impurity (b) chemicals
(c) metals (d) non-metals
32. Industri~l pollution is .........
{a) Man made pollution (b) Natural pollution
(c) Self pollution (d) None of these
33. Volcanic eruptions release gases a!}d volcanic .........
(a) Ash (b) Chemical
• C:
(c) Dater (d) Carbon
34. Decay of organic matter in marshy places releases .........
(a) Marsh gas (b) Chemical gas
(c) ~ood sap (d) None of these
35. ......... is a chemical substance found witlµn an organism.
(a) Xenobiotic (b) ·Noxenobiotic
· (c) Virus (d) Fungi
36. Cronic exposure to benzene at sufficient concentrations is kno~ to be associated with higher
incidence of......... · ·
(a) leukemia . (b) cough
(c) hair loss (d) eye irritation
37. The total mass of the earth's hydrosphere is about ......... 18. tonnes.
(a) 1 ' . (b) 2
(c) 3 · (d) 1.4
38. The total m~ss of earth's hydrosphere is about .........% of the earth's total mass.
(a) 1 · (b) 2 ·
(c) 3 (d) 0.023%
39. Surface water is ,. ........% of the fresh water:
(a) 1 (b) 0.1
(c) 0.3 (d) 10
·40. Sub s~face water or ground water is approximately .........% of fresh water.
(a) 10.1 (b) 20.1 ·
· (c) 30.1 . . (d) 40.1 · .
4Uuos'urface water or ground water is about .........% of the total water available on earth.
~ (a) 1 · · · . (b) 2
003 - ~w
 42. The fresh water located in the pore space of soil and rocks is called as
(a) sub surface water · (b) well water
(c) ice water (d) polluted water
43. .........% of fresh water is entrapped in icecaps and glaciers.
l:
'I
11
(a) 68.7 (b) 11%
(c) 1.1 (d) 11.8
44. The Himalayas, which.are often called .........
(a) The roof of the world (b) The cap of the world
(c) The acme of the world (d) Glorry of the world
45. Factories are the ......... of water pollution.
(a) point source (b) non point source
(c) artificial source (d) .none of these
46. ......... are the source of pollutants that cannot be traced to a single point of discharge.
(a) Point source · · ·· ·. ·· · ·_· ·. · : · . . · · · ·(b) Non point source · ·
(c) Artificial source (d) None of these
47. ......... is caused due to ~oor drinking water.
(a) Cholera · ·· (b) Maleriya
__)?r Dengu
r ·
~ per BIS, pH value of drinki~g water is .........
(a) 1-2 ·
(d) Asthama

(b) 2-4 .
(c) 4-8 (d) 6.5-8.5

., 49. As per BIS, the acceptable limit of dissolved solids (mil) in drinking water is
' ..
I
I
I (a) 100 (b) 200
.l (c) 500
' I
(d) 1000 ·
,,
I SO. In water treatment plant, the proces~ of remov~l of suspend·ed ·solids trapped in floe is called as .........
(a) coagulation (b) pre-chlorination
,)4" chlorination ' · · (d) sedimentation
?1'·:~e killing of bacteria means .........
(a) Disinfection • (b) Sedimentation
(c) Aeration (d) Filtrati~n
52. ......... is the water draining from your house's sinks, bathtubs, laundry machine which can be used to
water plants.
I (a) Yellow water · . (b) Grey water
:I
(ey-B'fuck water · (d) Blue water
~l'tlte water from toilets, which needs to be treated is called as .........
r (a) Black water (b) Blue water
(c) Yellow water (d) Brown water
54. The lawn made by dnought-resistant grasses is called as .........
(a) ·ECO lawn (b) Show lawn
(d) Shower lawn
.I
(c) Biotic lawn
55. Domestic sewage is .........% of pure water
(b) 9.9
{a) 99.9
(d) 100
(c) 90.9

riiiiiitftffS!(& 1~ "'1
/
-
59n/4'omestic sewage the~0 0 f
(a) 0.1%
·
Pollutants is
4.51 Environmental Pollution

(c) 99% (b) 0.001%

51. voe stands for (d) 100%

(a) Volcanic Organic Com d

(c) Various Organic C poun (b) Volatile Organic Compound
!)mpound . .
8 1 3-butadine is da (d) Volcamc obtam Compound
5· • ngerous comp d . .
(a) industrial · oun which 1s often associated with ........, uses.
(c) agricultural . . (b) non industrial
. . (d) none of these
59. The world 'smog, Is comed out of smoke and
(a) smell .........
(c) flock (b) fog
(d) foe
60. POP stands for
(a) Persistent Organic p0 11 t ants . . ... (b) Proper Organic Pollutants .
u
(c) Properly organized Pollut t . - ··
. ans (d) Purposely Organized Pollutants
61. Radon gas from radioactive decay within earth's .........
(a) crust . (b) surface - · ..· .
(c) water . _· (d) air
62. Radon gas is_formed from decay of ......... , .
· (a) Radium (b) Methane
·
r ,_ ~dium
~~a~~ gas ~s responsible for.........
(a) bone c~ cer '
(d) 'Atom

(b) lung
.
·cancer
() n'cancer . (d) blood cancer
orst short ter~ civilian pollutio_~ ~ris~s in India_was the 1984 ......... disaster.
() gpur . (b) Delhi
(c) Bhopal .. (d) Kanpur
65. India where buses now use compressed natural gas to help eliminate the ......... smog.
(a) pea-soup (b) pea-click
(c) pea-rock (d) pea-pea
66.......... is _the _c hemical re~ction ~~ sunl_i~~~•.ni~~o~en o~~es and volatile organic compounds i~ the
atmosphere.
(a) phofochemical smog . . (b) p·e rsistant smog
(c) permanent smog · · · · ·. · · . · (d) noneofthese
67. An electrt'"tatic precipitator (ESP) is a ......... device.
(a) tlltration (b) sedimentation
(c) coagulation (d} none of these
68. As per national ambient air quality standards, the amount of ozone (03) in µg/m3· (l hour} in
residential area is .........
(a) 2oo , (b) 300
(c) 180 (d) 9o
• t at removing dust and par:ticles.
69 • .........·are e ffi1c1en
(b} vent ilators
(a) venture scrubbers
(d} none of these
(c) high volume sampler
 . 3
7 o. As per national ambient air quality stands the amount of carbon monoxide (CO) in mg/m in 1 hour
. . ~
.
1S .........
(a) 01 (b) 100
. ~04 . (d) 11
})· Noise p~llutio~ is ~easured in .........
(a) Decibel urut ·· . (b) Cobalt unit
,Je1 Sound unit · · .· (d) Hearing.u nit
;i2. Noise stands for residential area in day time is ......... dB (A).
. (a} 10 . . . . ·· · . , (b) 20
jef'is 1
• , . .. • • (d) 55
JFJ· No~se·standards in ~ile~ce zone in (jay time is ......... dB (A).
(a} 10 (b) 20
(c} 30 (d) 50 .
74. Silence zone is referred as area -upto ....-..... meters around such as hospital, educational institutions
and courts.
(a) 100 (b) 200
(c} 300_ (d) 400
75. WEEE stands for
(a) Waste Electrical and Electronic Equipment
(b) Waste Environmenta l and Electronic Equipment
(c} Worst Electrical and Electronic Equipment
.. . ... .
(d} none of these . .
76. Organic matter constitute .........% of the municipal solid waste generated in India.
· . (a} . 10-20 (b) 35-40
(c} .40-60 (d) 80-90

.. ' .